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GE Multilin SR469-P5-HI-A20-E Motor Management Relay

SR750-P5-G5-S5-HI-A20-R

Parameter
1) Current/voltage input
Secondary rating of phase CT: 5A (suitable for conventional medium and high voltage motor CT)
Voltage input: Supports direct monitoring of high voltage (compatible with 200VAC level systems)
Measurement accuracy: Level 0.5, protection accuracy of 2%

2) Control power supply (wide range)
Communication: 70-265VAC, 48-62Hz
DC: 90-300VDC

3) I/O configuration
Digital output: 6-way C-type relay contacts (control start stop, alarm, trip)
Analog output: 4-channel 4-20mA (transmitting parameters such as current/voltage/temperature)
RTD input: 6 channels (supporting Pt100/Ni120/Cu10, etc., monitoring motor winding/bearing temperature)

Comprehensive protection function
Overload protection: thermal model algorithm, inverse time characteristic, precise matching of motor heating curve.
Short circuit protection: quick break+short delay, ≤ 10ms quick trip.
Grounding fault: sensitive grounding detection, suitable for high and low resistance grounding scenarios.
Stuck/stall: Identify locked rotor during start-up/operation to avoid rotor burnout.
Phase loss/phase imbalance/inversion: Real time monitoring of three-phase abnormalities to prevent single-phase operation.
Undervoltage/Overvoltage/Loss of Voltage: Voltage abnormality protection ensures the safety of the motor and load.
Overheating protection: RTD direct temperature measurement+heat accumulation calculation, dual temperature protection.

Typical Applications
Electricity: Power plant auxiliary equipment (fans, water pumps, coal mills), high-voltage motor protection
Oil and gas: compressor, pump, motor group control and protection
Metallurgy/Mining: Rolling mills, crushers, conveyor belt motors
Water treatment: large water pumps, aeration motors
Large scale manufacturing: integrated protection and management of assembly lines and drive motors

GE Multilin SR469-P5-HI-A20-E Motor Management Relay

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